Casio WK-1500 Reference Cards
Three images which should help any Casio WK-1500 owner get off the ground. A list of instruments (normally printed on the music stand, but if yours is missing, this will be helpful). Two button references describing how to actually use the instrument.
Collection synthmanuals-casio; synthmanuals; manuals; additional_collections
If you can't find the manual, this is the next best thing.